1994 Mercury Grand Marque

I followed the PCV line tonight, even used a mirror to view the
bottom,.... "looks" okay.
However, I followed the instructions in that link to clean the MAF

sensor, and found the inlet side of the probes covered in "fuzzies".
This seems very promising.
I cleared my codes, but won't be able to test drive it until tomorrow.
(Amazing how a small cutting disk on a Dremel tool can turn those
Tamperproof Torque screws into flat head screews)!
I very much appreciate everyones efforts in posting ideas. I will
certainly let you know how the story ends.

If you had "fuzzies" on the MAF, then that's "a" problem. It may very well be
"the"
problem. Please let us know what happens.
(Amazing how a small cutting disk on a Dremel tool can turn those Tamperproof
Torque
screws into flat head screews)
Ouch. That just hurts my technician sensibilities, but, well, if it works....
Those screws are geting to be common, less than $10 will get you a good set of
bits
in case you ever need them again FYI.
Good luck, Tom

LOL! I had to cut those screws to get the job done, but you are
correct about "needing" them in my box and I shall get some soon.
Yes,... the Fuzzies were "the" problem!!!!!!! Yeee Ha!!!!!
40 miles and no check engine light,..... and bigger than that, my
"other" problem was solved as well! Bonus!
For those that didn't catch the opening post: My "other" problem was
---- after setting all day, the car would cough and feal weak for
aprox 3 citi blocks, then clear up (consistently). I thought this was
bleadback of fuel pressure thru the fuel pump checkvalve (and I thought
it was unrelated). Apperently it was starving for fuel while cold, due
to the MAF sensor "lying" about air flow.
Yes, finally, she is CURED!
I big thank you to all who had contributed! My hat is off to you!

Ironic,.... still had a ruff idle with occssional stall. (Lean problem
history though).
Ended up actually replacing the MAF (wasted dollars).
Okay, I feel like an idiot, (but a happy idiot). Mine did indeed turn
out to be a vacuum leak,.... the same vacuum leak that everybody and
thier brother told me to look for.
I don't know how I missed it, I had looked three times and used mirrors
in the process.
But the infamous hose that leads from the Pcv valve, to the manifold,
all the way at the manifold,... (I could not believe my eyes) had this
big crack right on the elbow, at least two inches long. I am
stunned,.... yet without a testdrive, I am convinced that my problems
are over.
Thank you so much everybody!

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